My own experience is that
You should prepare a dictionary of common words in ancient Chinese, which is green and can be bought in bookstores.
When reading ancient Chinese or ancient books, look up words that you can't understand in the dictionary and remember every analysis.
If you see this word again in the future, there will be no problem, that is, you can use it more than once.
Also pay attention to the flexible use of parts of speech, such as nouns as adverbials, the use of rankings and so on.
If you have time, read more ancient prose, learn from it, stop reading ancient prose and historical records, and cultivate a sense of language.
If you have to do an ancient essay question, first look at the original text to find the answer, and translate the corresponding part of the original text, and the problem will be solved.
Finally, I wish you success!